Inventor - Locked Design View Representation

3D Design Volume Model
1

Hello everyone,

I can't save changes to an inventor file. 

it tells me that the design view representation locked (see if attached message)

Has anyone already had this and would have a solution to my PB?

Thank you.


2016-09-12_09_56_14-autodesk_inventor_professional_2014.png
2

I found it

In the assembly in which I used it was in cross-sectional view and it was difficult to record the piece on its own...